Arc flash happens when an electric current passes through air between ungrounded conductors or between ungrounded conductors and grounded conductors – the temperatures can reach 35,000°F. Exposure to these extreme temperatures both burns the skin directly and causes ignition of clothing, which adds to the burn injury. Electrical Safety Specialists provides custom training built specifically for your company’s needs nationwide for arc flash training.
The majority of hospital admissions due to electrical accidents are from arc flash burns, not from shocks. Each year more than 2,000 people are admitted to burn centers with severe arc flash burns. Fatal Arc flashes burns can exceed distances greater than 10 feet.
The tremendous temperatures of the arc cause the explosive expansion of both the surrounding air and the metal in the arc path. For example, copper expands by a factor of 67,000 times when it turns from a solid to a vapor. The danger associated with this expansion is one of high pressures, sound, and shrapnel. The high pressures can easily exceed hundreds or even thousands of pounds per square foot, knocking workers off ladders, rupturing eardrums, and collapsing lungs. The sounds associated with these pressures
can exceed 160 decibels.
Electrical Safety Specialists
have conducted many industry-specific training’s for hospitals, schools, the space industry (NASA
), government, manufacturing, power generation, industrial and more.
Protection against the arc flash hazards is intended to protect employees from receiving incurable burns. Although arc-rated garments are available with ratings greater than 40 cal/cm2, the advice given in Informational Note No. 3 to NFPA 70E 130.7(A) recognizes the extremely dangerous concussive forces, sound, and shrapnel that occur in arc blast events where the incident energy exceeds 40 cal/cm2.
Arc-rated garments with higher ratings can be used by employees when they are testing for the absence of voltage
or are performing some type of diagnostic task and are within the arc flash boundary of equipment where a high level of incident energy exists, but they are not intended to provide arc blast protection.
If you are interested in training for multiple locations or concerned about consistency of training throughout your corporation, Electrical Safety Specialists can develop and implement customized safety training throughout you company.
For more information about arc flash training provided nationwide by Electrical Safety Specialists, call (816) 925-0443. To get a quote, click here.